Dynamically choosing data to collect in a system

ABSTRACT

Systems, methods, and computer program products to perform an operation comprising collecting, metric data for a first job upon determining that the first job: uses a first resource of a computing system at a level that exceeds a first threshold, wherein the metric data describes a usage level of the first resource by the first job, and has been executing for a duration of time that exceeds a time threshold.

BACKGROUND

The present invention relates to data collection in a computing system,and more specifically, to dynamically choosing what data to collectabout applications programs running on the computing system to monitorsystem health or performance.

Software monitors may track system health and/or system performance. Onewell known problem with software monitors is that collecting the datarequired to diagnose or predict a problem can be costly in both the timerequired to collect the data as well as the amount of storage needed tostore the collected data. For example, collecting too much data may leadto system performance and storage issues at both data collection andproblem determination times. Similarly, collecting too little data maylead to inaccurate analysis and diagnostic misses. In addition,collecting the right amount of data, but not the right data needed tocorrectly diagnose a given problem may lead to inaccurate analysis andpossibly allow problems to go unidentified. Users often do not know whatto monitor, which then causes the collection of too much or too littledata. In addition, when the user changes the collection policy, thesechanges must be manually propagated to the system monitors.

SUMMARY

In one embodiment, a system comprises a processor and a memorycontaining a program configured to perform an operation comprisingcollecting metric data for a first job upon determining that the firstjob: uses a first resource of the system at a level that exceeds a firstthreshold, wherein the metric data describes a usage level of the firstresource by the first job, and has been executing for a duration of timethat exceeds a time threshold.

In another embodiment, a method comprises collecting metric data for afirst job upon determining that the first job: uses a first resource ofa computing system at a level that exceeds a first threshold, whereinthe metric data describes a usage level of the first resource by thefirst job, and has been executing for a duration of time that exceeds atime threshold.

In another embodiment, a computer program product comprisescomputer-readable program code, which when executed by a processor,performs an operation comprising collecting metric data for a first jobupon determining that the first job: uses a first resource of acomputing system at a level that exceeds a first threshold, wherein themetric data describes a usage level of the first resource by the firstjob, and has been executing for a duration of time that exceeds a timethreshold.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 illustrates a system configured to dynamically choose data fordata collection, according to one embodiment.

FIG. 2 illustrates a method to dynamically choose data for datacollection, according to one embodiment.

FIG. 3 illustrates a method to determine whether to collect data,according to one embodiment.

DETAILED DESCRIPTION

Embodiments disclosed herein provide techniques to dynamically collectdata from a set of programs and applications without the need toconfigure or instrument the applications. More specifically, embodimentsdisclosed herein collect data from jobs (also referred to asapplications, programs, address spaces, processes, and the like) thatmay cause system issues and are reasonably persistent (as opposed tothose jobs that are transient). In addition, embodiments disclosedherein may dynamically limit the amount of data collected by thesoftware monitor by not collecting information from jobs that do not usesignificant amounts of the resource metric being collected (or notcollecting information from jobs that have a rate of a metric beingmonitored that is insignificant). Stated differently, embodimentsdisclosed herein evaluate both the duration of a job (i.e., persistentjobs) and the job's use of resources (or rate of a monitored metric) todetermine a set of jobs that has the potential to cause system issuesrelative to the metric being collected (such as memory use, processoruse, storage use, rate of messages, rates of logged data, etc). Inaddition, embodiments disclosed herein may monitor two types ofresources for jobs. The first type of resource may be the actualresources being used by a job (or predicted future resource usage by thejob), such as memory, CPU, storage, and the like. The second type ofresource may be the rate of a metric that can be monitored forabnormalities, such as the rate of messages sent by a job, the rate oflogged data, the rate of failure records for a job, and the like. Thesecond type of resource usage may be monitored for abnormal rates (toohigh or too low) that can indicate failures that can lead to job issuesand system outages.

Generally, embodiments disclosed herein may generally collect data froma job when the job satisfies two criteria. First, the amount of time agiven job has been running needs to satisfy a duration test (defined bya threshold amount of time) and second, the job utilizes an amount ofresources that satisfies a utilization test (defined by a thresholdpercentage or amount of resource usage). For example, embodimentsdisclosed herein skip collecting metric data for a job that passes theduration test but fails the utilization test (i.e., the job does notconsume a threshold amount of resources). However, if the job's resourceutilization increases beyond the threshold, the software monitor maystart collecting metric data for the job, limiting collection to thosejobs whose resource utilization is significant. In addition, if theresource utilization subsequently decreases below the threshold (orlower), embodiments disclosed herein may stop collecting metric data forthe job. However, once the resource utilization threshold is met, thesoftware monitor may wait until the resource utilization falls below asecond threshold, to avoid starting/stopping the collection whenresource utilization fluctuates around the initial threshold.

Furthermore, in one embodiment, metric data may be collected for asystem-related job that does not pass the duration test but passes theutilization test. That is, the duration requirement may be ignored forthose jobs that are initially assumed to be system-related.System-related jobs include, for example and without limitation, jobsthat start during initial program load, or within a threshold amount oftime of system startup, or jobs explicitly marked as being systemrelated by either the system itself or by a user (e.g., a systemoperator).

The duration and utilization thresholds may be user-configurablethresholds. For example, the duration threshold may specify that a jobmust run for three hours before passing the duration test, while theutilization threshold may specify that a job must utilize at least 20%of a resource before the job passes the utilization test.

FIG. 1 illustrates a system 100 configured to dynamically choose datafor data collection, according to one embodiment. The system 100includes one or more computers 102 connected to other computers via anetwork 130. In general, the network 130 may be a telecommunicationsnetwork and/or a wide area network (WAN). In a particular embodiment,the network 130 includes access to the Internet.

The computer 102 generally includes a processor 104 which obtainsinstructions and data via a bus 120 from a memory 106 and/or storage108. The computer 102 may also include one or more network interfacedevices 118, input devices 122, cameras 123, output devices 124, andmicrophone 125 connected to the bus 120. The computer 102 is generallyunder the control of an operating system. Examples of operating systemsinclude the UNIX operating system, versions of the Microsoft Windowsoperating system, and distributions of the Linux operating system. (UNIXis a registered trademark of The Open Group in the United States andother countries. Microsoft and Windows are trademarks of MicrosoftCorporation in the United States, other countries, or both. Linux is aregistered trademark of Linus Torvalds in the United States, othercountries, or both.) More generally, any operating system supporting thefunctions disclosed herein may be used. The processor 104 is aprogrammable logic device that performs instruction, logic, andmathematical processing, and may be representative of one or more CPUs.The network interface device 118 may be any type of networkcommunications device allowing the computer 102 to communicate withother computers via the network 130.

The storage 108 is representative of hard-disk drives, solid statedrives, flash memory devices, optical media and the like. Generally, thestorage 108 stores application programs and data for use by the computer102. In addition, the memory 106 and the storage 108 may be consideredto include memory physically located elsewhere; for example, on anothercomputer coupled to the computer 102 via the bus 120.

The input device 122 may be any device for providing input to thecomputer 102. For example, a keyboard and/or a mouse may be used. Theinput device 122 represents a wide variety of input devices, includingkeyboards, mice, controllers, and so on. The output device 124 mayinclude monitors, touch screen displays, and so on.

As shown, the memory 106 contains the predictive failure analysis (PFA)module 112, which is configured to collect data for trend analysis totrigger an alert when resource exhaustion is predicted to occur in aparticular job 115 (which may be any program, address space, module,application, or other piece of executable code). In at least one aspect,the PFA module 112 is a job 115 that is executed by a virtual machine114. In such aspects, PFA 112 executing on a given virtual machine 114has its own data in the metric data 116 and settings 117. Examples ofresources that may be exhausted include the processor 104, memory 106,storage 108, network interface 118, and the like. The PFA module 112 maygenerally collect any type of data related to a job, such as usage dataof a resource, execution time, rates of messages generated by a job,rates of logged data, rates of error records, and the like. In at leastone embodiment, the PFA module 112 is a component of an operating system(not pictured).

The PFA module 112 dynamically collects data for jobs 115 that mayexhaust a resource over an extended period of time. Therefore, the PFAmodule 112 generally collects data for jobs 115 that pass both aduration test and a utilization (or usage) test. Jobs 115 that have beenexecuting (or running) for an amount of time that exceeds a thresholdamount of time specified in the settings 117 pass the duration test.Similarly, the PFA module 112 may determine that a job 115 passes theutilization test when the job 115 uses a particular resource at a levelthat exceeds a threshold specified in the settings 117.

In one embodiment, the PFA module 112 may apply different use andduration thresholds, as the case may be, for different types ofresources, jobs. For example, the PFA module 112 may collect data onjobs 115 that are determined to be system-related or have startedrunning within a predefined amount of time following system startup(such as one hour since system startup, or initial program load (IPL)).In addition, to address the scenario where a job's utilization “flipflops” above and below the utilization thresholds, the PFA module 112may apply a second threshold before stopping the collection of data. Forexample, a general threshold for storage usage in the settings 117 maybe 20% of available storage. If job A utilizes 30% of storage (andpasses the applicable duration test), the PFA module 112 may collectmetric data for job A. In addition, the PFA module 112 may continue tocollect metric data for job A even if job A's utilization of storagespace falls below 20%, but remains above a second threshold, such as 10%(or half of the general threshold). Therefore, the PFA module 112 maycollect metric data for job A until job A's utilization of storage fallsbelow 10% of available storage (and therefore may be insignificant).Doing so may eliminate odd gaps in the collected data, which may skewtrend analysis performed by the PFA module 112.

Although shown as part of a virtualized system where a hypervisor 113manages a plurality of virtual machines 114 executing a respectiveplurality of jobs 115, the PFA module 112 may execute on any type ofcomputing system. In such a virtualized system, the hypervisor 113 mayallocate six different types of virtual storage (corresponding to thememory 106) to a given job 115 executing on a virtual machine 114. Avirtual machine 114 (also referred to as a logical partition) is anemulation of a particular computer system. The virtual storage types inthe memory 106 may include a user region, an authorized area, anextended user region, and an extended authorized area, a private areaconsisting of the user region and the authorized area, and an extendedprivate area consisting of the extended user region and the extendedauthorized area. The PFA module 112 may apply the utilization andduration tests to these areas individually and/or in combination. Forexample, some virtual storage locations are related such that heavyusage of one of the areas can cause resource exhaustion in another area.Therefore, embodiments disclosed herein collect usage combined usagedata for these related virtual storage areas when a job 115 has acombined utilization of the related virtual storage areas that exceeds acombined utilization threshold in the settings 117. Therefore, the PFAmodule 112 may collect usage data for each individual virtual storagearea and each combined virtual storage area once the duration test ispassed. Since data for storage locations are collected on an as-neededbasis, the PFA module 112 may reduce the amount of time and storagetraditionally required to collect data for predictive analysis.

As shown, the storage 108 includes metric data 116 and settings 117. Themetric data 116 may be any type of data collected by the PFA module 112,such as resource utilization levels and the like. The settings 117 mayinclude a plurality of rules, thresholds, job types (such assystem-related jobs) and other settings used by the PFA module 112 indetermining whether to collect data from a job 115. For example, thesettings 117 may specify utilization thresholds, duration thresholds,and other rules (which may allow the PFA module 112 to dynamicallycollect data related to the jobs 115. In addition, the settings 117 mayspecify jobs 115 that are specifically excluded or included from datacollection by the PFA module 112, regardless of usage and durationrequirements. For example, a user may suspect that job X is causingissues on a system. Therefore, the settings 117 may indicate the PFAmodule 112 should collect data regarding job X at all times (or atspecific times). Similarly, if the user suspects that job Y providesfalse positive indications of system failures, the user may specify arule in the settings 117 that indicates the PFA module 112 should notcollect data for job Y at any time.

FIG. 2 illustrates a method 200 to dynamically choose data for datacollection, according to one embodiment. Generally, the steps of themethod 200 configure the PFA module 112 to collect data based on a job'sduration and resource utilization. The method begins at step 210, wherea computing system is booted and jobs begin executing on the system. Atstep 220, a user may optionally configure the PFA module 112 and relatedsettings. For example, the user may define job inclusions, jobexclusions, utilization thresholds for different jobs and/or differentresource types, and duration thresholds. At step 230, the PFA module 112begins executing. If the user does not configure the PFA module 114and/or the related settings, the PFA module 112 may execute with defaultsettings. At step 240, described in greater detail with reference toFIG. 3, the PFA module 112 determines whether to collect data for jobs115 executing on the computer 102. Generally (with some exceptions), thePFA module 112 may collect data for jobs that pass both the durationtest and the resource utilization test. At step 260, the PFA module 112may store the data collected from the jobs as part of the metric data116. At step 260, the PFA module 112 may perform trend analysis topredict whether an error is expected to occur on the computing system ata specific future time. Similarly, the PFA module 112 may performanalysis to determine what the expected value should be for a rate ormetric to determine whether an error is occurring on the system at thispoint in time.

FIG. 3 illustrates a method 300 to determine whether to collect datafrom a given job, according to one embodiment. As shown, the method 300begins at step 305, where the PFA module 112 determines whether tocollect data. For example, settings 117 may specify a minimum durationof post-startup time before the PFA module 112 begins collecting data(such as 1 hour after system start). If the PFA module 112 determines itis not time to collect data, the method returns to step 305. If the PFAmodule 112 determines it is time to start collecting data, then at step310, the PFA module 112 determines whether jobs are candidates for datacollection. If no jobs need to be analyzed, the method returns to step305. Otherwise, if a job needs to be analyzed, then at step 315 the PFAmodule 112 determines whether the candidate job has been excluded fromdata collection. For example, settings 117 may indicate that job Xshould be excluded from data collection by the PFA module 112. If thejob is excluded, method 300 returns to step 310. If the job is notexcluded, then at step 320 the PFA module 112 determines whether the jobis included in data collection. For example, settings 117 may indicatethat the PFA module 112 should collect data for job Y. If the PFA module112 determines that the job is included, the PFA module 112 collectsdata for the job (step 325). If the PFA module 112 determines that thejob is not included, the PFA module 112 may determine whether todynamically collect data for the job.

To do so, at step 330, the PFA module 112 determines whether the currentjob started within a threshold time (such as one hour) after initialprogram load (IPL, or more generally, system startup). If so, the methodproceeds to step 340, where the PFA module 112 determines if the jobpasses the usage test for a system resource. If the job passes the usagetest, the PFA module 112 collects data for the job (as the job ispresumed to be a system related job). If the job did not start withinthe threshold amount of time, the PFA module 112 determines whether thecurrent job passes the duration test. Stated differently, the PFA module112 may determine, at step 335, whether the current job has been runningfor a period of time that exceeds a threshold amount of time. Thethreshold may be a time threshold for all jobs, a time thresholdspecific to the job, or a class of jobs. If the job does not pass theduration test, the PFA module 112 does not collect data for the job. Ifthe job passes the duration test, the PFA module 112 determines whetherthe job passes the usage test for a system resource (step 340). Stateddifferently, the PFA module 112 may determine whether the job is using aresource at a level which exceeds a resource utilization threshold. Ifthe job passes the resource usage test (and the duration test), the PFAmodule 112 collects data at step 350. If the job does not pass theresource usage test, the PFA module 112 further evaluates the job atstep 345 prior to deciding whether to collect data.

At step 345, the PFA module 112 may determine whether data waspreviously collected for the job, and the job is still using at leastone half of the usage requirement (or threshold). For example, a usagerequirement for processor usage in the settings 117 may be 50%. If thecurrent job was previously utilizing 75% of the processor (and passedthe duration test, or is a system-related job), the PFA module 112 wouldhave previously collected data for the job. Therefore, at step 345, thePFA module 112 determines whether the job is currently using more than25% of the processor resources (i.e., one half of the 50% utilizationthreshold). If the job is using less than 25% of processor resources,the PFA module 112 may determine to not collect any more data for thecurrent job. If, however, the job is using more than one half of theusage threshold (e.g., more than 25% of processor resources), the PFAmodule 112 may proceed to step 350. At step 350, the PFA module 112 maybegin collecting resource utilization data for the job. The PFA module112 may collect any type of data for use in trend analysis to analyzesystem performance and/or predict system failures. The data may be forany type of resource. The PFA module 112 may then proceed to step 355,where the PFA module 112 determines whether any resources remain. Ifmore resources remain (such as different resource types, or combinedresources), the PFA module 112 returns to step 340. If no resourcesremain (i.e., the PFA module 112 has analyzed the current job'sutilization of each type of system resource), the PFA module 112 returnsto step 310.

Advantageously, embodiments disclosed herein limit the amount of datacollected by a system monitor to those jobs (or a subset of jobs) thatpass both a time duration test and a resource utilization test.Embodiments disclosed herein collect data only for those jobs, such asoperating system and middleware-like jobs, that may exhaust systemresources over an extended period of time, rather than collecting datafor rogue applications that exhaust resources quickly, or are transientin nature. Doing so reduces the amount of time and system resourcesspent in collecting data for trend analysis.

The descriptions of the various embodiments of the present inventionhave been presented for purposes of illustration, but are not intendedto be exhaustive or limited to the embodiments disclosed. Manymodifications and variations will be apparent to those of ordinary skillin the art without departing from the scope and spirit of the describedembodiments. The terminology used herein was chosen to best explain theprinciples of the embodiments, the practical application or technicalimprovement over technologies found in the marketplace, or to enableothers of ordinary skill in the art to understand the embodimentsdisclosed herein.

In the foregoing, reference is made to embodiments presented in thisdisclosure. However, the scope of the present disclosure is not limitedto specific described embodiments. Instead, any combination of therecited features and elements, whether related to different embodimentsor not, is contemplated to implement and practice contemplatedembodiments. Furthermore, although embodiments disclosed herein mayachieve advantages over other possible solutions or over the prior art,whether or not a particular advantage is achieved by a given embodimentis not limiting of the scope of the present disclosure. Thus, therecited aspects, features, embodiments and advantages are merelyillustrative and are not considered elements or limitations of theappended claims except where explicitly recited in a claim(s). Likewise,reference to “the invention” shall not be construed as a generalizationof any inventive subject matter disclosed herein and shall not beconsidered to be an element or limitation of the appended claims exceptwhere explicitly recited in a claim(s).

Aspects of the present invention may take the form of an entirelyhardware embodiment, an entirely software embodiment (includingfirmware, resident software, microcode, etc.) or an embodiment combiningsoftware and hardware aspects that may all generally be referred toherein as a “circuit,” “module” or “system.”

The present invention may be a system, a method, and/or a computerprogram product. The computer program product may include a computerreadable storage medium (or media) having computer readable programinstructions thereon for causing a processor to carry out aspects of thepresent invention.

The computer readable storage medium can be a tangible device that canretain and store instructions for use by an instruction executiondevice. The computer readable storage medium may be, for example, but isnot limited to, an electronic storage device, a magnetic storage device,an optical storage device, an electromagnetic storage device, asemiconductor storage device, or any suitable combination of theforegoing. A non-exhaustive list of more specific examples of thecomputer readable storage medium includes the following: a portablecomputer diskette, a hard disk, a random access memory (RAM), aread-only memory (ROM), an erasable programmable read-only memory (EPROMor Flash memory), a static random access memory (SRAM), a portablecompact disc read-only memory (CD-ROM), a digital versatile disk (DVD),a memory stick, a floppy disk, a mechanically encoded device such aspunch-cards or raised structures in a groove having instructionsrecorded thereon, and any suitable combination of the foregoing. Acomputer readable storage medium, as used herein, is not to be construedas being transitory signals per se, such as radio waves or other freelypropagating electromagnetic waves, electromagnetic waves propagatingthrough a waveguide or other transmission media (e.g., light pulsespassing through a fiber-optic cable), or electrical signals transmittedthrough a wire.

Computer readable program instructions described herein can bedownloaded to respective computing/processing devices from a computerreadable storage medium or to an external computer or external storagedevice via a network, for example, the Internet, a local area network, awide area network and/or a wireless network. The network may comprisecopper transmission cables, optical transmission fibers, wirelesstransmission, routers, firewalls, switches, gateway computers and/oredge servers. A network adapter card or network interface in eachcomputing/processing device receives computer readable programinstructions from the network and forwards the computer readable programinstructions for storage in a computer readable storage medium withinthe respective computing/processing device.

Computer readable program instructions for carrying out operations ofthe present invention may be assembler instructions,instruction-set-architecture (ISA) instructions, machine instructions,machine dependent instructions, microcode, firmware instructions,state-setting data, or either source code or object code written in anycombination of one or more programming languages, including an objectoriented programming language such as Smalltalk, C++ or the like, andconventional procedural programming languages, such as the “C”programming language or similar programming languages. The computerreadable program instructions may execute entirely on the user'scomputer, partly on the user's computer, as a stand-alone softwarepackage, partly on the user's computer and partly on a remote computeror entirely on the remote computer or server. In the latter scenario,the remote computer may be connected to the user's computer through anytype of network, including a local area network (LAN) or a wide areanetwork (WAN), or the connection may be made to an external computer(for example, through the Internet using an Internet Service Provider).In some embodiments, electronic circuitry including, for example,programmable logic circuitry, field-programmable gate arrays (FPGA), orprogrammable logic arrays (PLA) may execute the computer readableprogram instructions by utilizing state information of the computerreadable program instructions to personalize the electronic circuitry,in order to perform aspects of the present invention.

Aspects of the present invention are described herein with reference toflowchart illustrations and/or block diagrams of methods, apparatus(systems), and computer program products according to embodiments of theinvention. It will be understood that each block of the flowchartillustrations and/or block diagrams, and combinations of blocks in theflowchart illustrations and/or block diagrams, can be implemented bycomputer readable program instructions.

These computer readable program instructions may be provided to aprocessor of a general purpose computer, special purpose computer, orother programmable data processing apparatus to produce a machine, suchthat the instructions, which execute via the processor of the computeror other programmable data processing apparatus, create means forimplementing the functions/acts specified in the flowchart and/or blockdiagram block or blocks. These computer readable program instructionsmay also be stored in a computer readable storage medium that can directa computer, a programmable data processing apparatus, and/or otherdevices to function in a particular manner, such that the computerreadable storage medium having instructions stored therein comprises anarticle of manufacture including instructions which implement aspects ofthe function/act specified in the flowchart and/or block diagram blockor blocks.

The computer readable program instructions may also be loaded onto acomputer, other programmable data processing apparatus, or other deviceto cause a series of operational steps to be performed on the computer,other programmable apparatus or other device to produce a computerimplemented process, such that the instructions which execute on thecomputer, other programmable apparatus, or other device implement thefunctions/acts specified in the flowchart and/or block diagram block orblocks.

The flowchart and block diagrams in the Figures illustrate thearchitecture, functionality, and operation of possible implementationsof systems, methods, and computer program products according to variousembodiments of the present invention. In this regard, each block in theflowchart or block diagrams may represent a module, segment, or portionof instructions, which comprises one or more executable instructions forimplementing the specified logical function(s). In some alternativeimplementations, the functions noted in the block may occur out of theorder noted in the figures. For example, two blocks shown in successionmay, in fact, be executed substantially concurrently, or the blocks maysometimes be executed in the reverse order, depending upon thefunctionality involved. It will also be noted that each block of theblock diagrams and/or flowchart illustration, and combinations of blocksin the block diagrams and/or flowchart illustration, can be implementedby special purpose hardware-based systems that perform the specifiedfunctions or acts or carry out combinations of special purpose hardwareand computer instructions.

Embodiments of the invention may be provided to end users through acloud computing infrastructure. Cloud computing generally refers to theprovision of scalable computing resources as a service over a network.More formally, cloud computing may be defined as a computing capabilitythat provides an abstraction between the computing resource and itsunderlying technical architecture (e.g., servers, storage, networks),enabling convenient, on-demand network access to a shared pool ofconfigurable computing resources that can be rapidly provisioned andreleased with minimal management effort or service provider interaction.Thus, cloud computing allows a user to access virtual computingresources (e.g., storage, data, applications, and even completevirtualized computing systems) in “the cloud,” without regard for theunderlying physical systems (or locations of those systems) used toprovide the computing resources.

Typically, cloud computing resources are provided to a user on apay-per-use basis, where users are charged only for the computingresources actually used (e.g. an amount of storage space consumed by auser or a number of virtualized systems instantiated by the user). Auser can access any of the resources that reside in the cloud at anytime, and from anywhere across the Internet. In context of the presentinvention, a user may access applications or related data available inthe cloud. For example, the PFA module 112 could execute on a computingsystem in the cloud and dynamically collect data from jobs 115. In sucha case, the PFA module 112 could store the collected data at a storagelocation in the cloud. Doing so allows a user to access this informationfrom any computing system attached to a network connected to the cloud(e.g., the Internet).

While the foregoing is directed to embodiments of the present invention,other and further embodiments of the invention may be devised withoutdeparting from the basic scope thereof, and the scope thereof isdetermined by the claims that follow.

What is claimed is:
 1. A system, comprising: one or more processors; anda memory containing a program which when executed by the processorsperforms an operation for dynamically limiting collection of metricdata, the operation comprising: collecting, metric data for a first jobupon determining that the first job: began executing within a thresholdamount of time of an initial program load of the system, wherein thefirst job manages an aspect of the system; uses the memory at a levelthat exceeds a first combined memory threshold, wherein the first job isallocated each of a plurality of portions of the memory, wherein thefirst combined memory threshold applies to use of at least two of theplurality of portions of the memory; uses a first resource of the systemat a level that exceeds a first threshold, wherein the metric datadescribes a usage level of the memory and a usage level of the firstresource by the first job, wherein the first resource is different thanthe memory; and has been executing for a duration of time that exceeds atime threshold; and stopping the collecting of metric data for the firstjob upon determining at least one of: (i) that the level of use of thememory falls below the first combined memory threshold, and (ii) thelevel of use of the first resource falls below the first threshold,wherein the collecting of the metric data causes the computing system tocollect less metric data relative to collecting metric data withoutconsidering the combined threshold, the first threshold, and the timethreshold.
 2. The system of claim 1, the operation further comprisingsubsequent to determining that the first job has been executing for theduration of time that exceeds the time threshold: collecting, metricdata for the first job upon further determining that the utilizationlevel of the first job reduces to a second level of utilization, whereinthe second level of utilization is less than the first threshold andgreater than a second threshold.
 3. The system of claim 2, the operationfurther comprising stopping the collection of metric data for the firstjob upon determining that the second level of utilization is less thanthe second threshold.
 4. The system of claim 1, the operation furthercomprising not collecting metric data for a second job, upon determiningat least one of: that the second job has not been executing for aduration of time that exceeds the time threshold; that the second jobhas been predefined to be excluded from collection of metric data; andthat the second job does not utilize any resource of the system at autilization level that exceeds a utilization threshold for therespective resource.
 5. The system of claim 1, wherein the plurality ofportions of the memory comprise: (i) a user region of the memory, (ii)an authorized area of the memory, (iii) an extended user region of thememory, and (iv) an extended authorized area of the memory, wherein themetric data for the first job is collected upon further determining thatthe first job has utilized the at least two of the plurality of portionsof the memory for a duration of time that exceeds the time threshold. 6.The system of claim 1, wherein the collected metric data is used topredict a failure within the system, wherein the first resourcecomprises at least one of: (i) a storage, (ii) a processor, (iii) anetwork adapter, (iv) a file system, (v) a rate of messages generated bythe first job, (vi) a rate of data logged by the first job, and (vii) arate of error records created by the first job.
 7. The system of claim1, the operation further comprising subsequent to determining that thefirst job has been executing for the duration of time that exceeds thetime threshold: collecting, metric data for the first job upon furtherdetermining that the level of use of the plurality of portions of thememory reduces to a second level of utilization, wherein the secondlevel of utilization is less than the first combined memory thresholdand greater than a second combined memory threshold.
 8. The system ofclaim 7, the operation further comprising stopping the collection ofmetric data for the first job upon determining that the second level ofutilization is less than the second combined memory threshold.
 9. Thesystem of claim 8, wherein the plurality of portions of the memorycomprise: (i) a user region of the memory, (ii) an authorized area ofthe memory, (iii) an extended user region of the memory, and (iv) anextended authorized area of the memory, wherein the metric data for thefirst job is collected upon further determining that the first job hasutilized the at least two of the plurality of portions of the memory fora duration of time that exceeds the time threshold.
 10. The system ofclaim 9, wherein the collected metric data is used to predict a failurewithin the system, wherein the first resource comprises at least one of:(i) a storage, (ii) a processor, (iii) a network adapter, (iv) a filesystem, (v) a rate of messages generated by the first job, (vi) a rateof data logged by the first job, and (vii) a rate of error recordscreated by the first job.
 11. A computer program product comprising: acomputer-readable storage medium having computer-readable program codeembodied therewith, the computer-readable program code executable by acomputer processor to perform an operation for dynamically limitingcollection of metric data, the operation comprising: collecting, metricdata for a first job upon determining that the first job: beganexecuting within a threshold amount of time of an initial program loadof a computing system, wherein the first job manages an aspect of thecomputing system; uses a memory of the computing system at a level thatexceeds a first combined memory threshold, wherein the first job isallocated each of a plurality of portions of the memory, wherein thefirst combined memory threshold applies to use of at least two of theplurality of portions of the memory; uses a first resource of thecomputing system at a level that exceeds a first threshold, wherein themetric data describes a usage level of the memory and a usage level ofthe first resource by the first job; and has been executing for aduration of time that exceeds a time threshold; and stopping thecollecting of metric data for the first job upon determining at leastone of: (i) that the level of use of the memory falls below the firstcombined memory threshold, and (ii) the level of use of the firstresource falls below the first threshold, wherein the collecting of themetric data causes the computing system to collect less metric datarelative to collecting metric data without considering the combinedthreshold, the first threshold, and the time threshold.
 12. The computerprogram product of claim 11, the operation further comprising subsequentto determining that the first job has been executing for the duration oftime that exceeds the time threshold: collecting, metric data for thefirst job upon further determining that the utilization level of thefirst job reduces to a second level of utilization, wherein the secondlevel of utilization is less than the first threshold and greater than asecond threshold.
 13. The computer program product of claim 12, theoperation further comprising stopping the collection of metric data forthe first job upon determining that the second level of utilization isless than the second threshold.
 14. The computer program product ofclaim 11, wherein the plurality of portions of the memory comprise: (i)a user region of the memory, (ii) an authorized area of the memory,(iii) an extended user region of the memory, and (iv) an extendedauthorized area of the memory, wherein the metric data for the first jobis collected upon further determining that the first job has utilizedthe at least two of the plurality of portions of the memory for aduration of time that exceeds the time threshold, wherein the collectedmetric data is used to predict a failure within the computing system.15. The computer program product of claim 11, the operation furthercomprising not collecting metric data for a second job, upon determiningat least one of: that the second job has not been executing for aduration of time that exceeds the time threshold; that the second jobhas been predefined to be excluded from collection of metric data; andthat the second job does not utilize any resource of the computingsystem at a utilization level that exceeds a utilization threshold forthe respective resource.